Meh I'll figure out submodules later

.config/nvim/pack/tree/start/nui.nvim/tests/nui/line/init_spec.lua

@@ -0,0 +1,164 @@
+pcall(require, "luacov")
+
+local Line = require("nui.line")
+local Text = require("nui.text")
+local h = require("tests.helpers")
+
+local eq = h.eq
+
+describe("nui.line", function()
+  it("can accept initial nui.text objects", function()
+    local t1, t2 = Text("One"), Text("Two")
+    local line = Line({ t1, t2 })
+
+    eq(#line._texts, 2)
+  end)
+
+  describe("method :append", function()
+    it("returns nui.text for string parameter", function()
+      local line = Line()
+      local text = line:append("One")
+
+      eq(type(text.content), "function")
+    end)
+
+    it("returns nui.text for nui.text parameter", function()
+      local line = Line()
+      local text = Text("One")
+      local ret_text = line:append(text)
+
+      eq(text == ret_text, true)
+      eq(type(ret_text.content), "function")
+    end)
+
+    it("returns nui.line for nui.line parameter", function()
+      local line = Line()
+
+      local content_line = Line({ Text("One"), Text("Two") })
+
+      local ret_content_line = line:append(content_line)
+
+      eq(content_line == ret_content_line, true)
+      eq(type(ret_content_line.append), "function")
+    end)
+
+    it("stores and returns block with same reference", function()
+      local line = Line()
+
+      local text_one = line:append("One")
+
+      eq(line._texts[1] == text_one, true)
+
+      local text_two = Text("Two")
+      local ret_text_two = line:append(text_two)
+
+      eq(text_two == ret_text_two, true)
+      eq(line._texts[2] == text_two, true)
+      eq(line._texts[2] == ret_text_two, true)
+
+      local text_three = Text("Three")
+      local text_four = Text("Four")
+      local content_line = Line({ text_three, text_four })
+      local ret_content_line = line:append(content_line)
+
+      eq(content_line == ret_content_line, true)
+      eq(line._texts[3] == content_line._texts[1], true)
+      eq(line._texts[4] == content_line._texts[2], true)
+    end)
+  end)
+
+  describe("method :content", function()
+    it("returns whole text content", function()
+      local line = Line()
+      line:append("One")
+      line:append("Two")
+
+      eq(line:content(), "OneTwo")
+    end)
+  end)
+
+  describe("method :width", function()
+    it("returns whole text width", function()
+      local line = Line()
+      line:append("One")
+      line:append("Two")
+
+      eq(line:width(), 6)
+    end)
+  end)
+
+  describe("method", function()
+    local winid, bufnr
+
+    before_each(function()
+      winid = vim.api.nvim_get_current_win()
+      bufnr = vim.api.nvim_create_buf(false, true)
+
+      vim.api.nvim_win_set_buf(winid, bufnr)
+    end)
+
+    after_each(function()
+      vim.api.nvim_buf_delete(bufnr, { force = true })
+    end)
+
+    describe(":highlight", function()
+      local hl_group_one, hl_group_two, ns, ns_id
+      local linenr
+      local t1, t2, t3, t4
+      local line
+
+      before_each(function()
+        hl_group_one = "NuiTextTestOne"
+        hl_group_two = "NuiTextTestTwo"
+        ns = "NuiTest"
+        ns_id = vim.api.nvim_create_namespace(ns)
+
+        linenr = 1
+
+        t1 = Text("One")
+        t2 = Text("Two", hl_group_one)
+        t3 = Text("Three", hl_group_two)
+        t4 = Text("Four")
+
+        line = Line({ t1, t2, t3, t4 })
+      end)
+
+      it("is applied with :render", function()
+        line:render(bufnr, ns_id, linenr)
+
+        h.assert_highlight(bufnr, ns_id, linenr, t2:content(), hl_group_one)
+        h.assert_highlight(bufnr, ns_id, linenr, t3:content(), hl_group_two)
+      end)
+
+      it("can highlight existing buffer line", function()
+        vim.api.nvim_buf_set_lines(
+          bufnr,
+          linenr - 1,
+          -1,
+          false,
+          { t1:content() .. t2:content() .. t3:content() .. t4:content() }
+        )
+
+        line:highlight(bufnr, ns_id, linenr)
+
+        h.assert_highlight(bufnr, ns_id, linenr, t2:content(), hl_group_one)
+        h.assert_highlight(bufnr, ns_id, linenr, t3:content(), hl_group_two)
+      end)
+    end)
+
+    describe(":render", function()
+      it("works", function()
+        local linenr = 1
+
+        local line = Line()
+        line:append("4")
+        line:append("2")
+        line:render(bufnr, -1, linenr)
+
+        h.assert_buf_lines(bufnr, {
+          "42",
+        })
+      end)
+    end)
+  end)
+end)